172822992 has 20 divisors (see below), whose sum is σ = 446459520. Its totient is φ = 57607648.

The previous prime is 172822987. The next prime is 172822999. The reversal of 172822992 is 299228271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172822999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1800192 + ... + 1800287.

It is an arithmetic number, because the mean of its divisors is an integer number (22322976).

Almost surely, 2^172822992 is an apocalyptic number.

172822992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

172822992 is an abundant number, since it is smaller than the sum of its proper divisors (273636528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172822992 is a wasteful number, since it uses less digits than its factorization.

172822992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3600490 (or 3600484 counting only the distinct ones).

The product of its digits is 72576, while the sum is 42.

The square root of 172822992 is about 13146.2158813858. The cubic root of 172822992 is about 557.0153625052.

The spelling of 172822992 in words is "one hundred seventy-two million, eight hundred twenty-two thousand, nine hundred ninety-two".